Head coach Eddie Erdelatz was diagnosed with a stomach ulcer and was taking medication for the condition.
Fullback Billy Lott pulled a hamstring muscle in practice.
Wide receiver Al Hoisington was hit in the eye by a Babe Parilli pass in practice, giving him a livid bruise.
All three were expected to be on board the plane for the trip to Buffalo on the 20th that would mark the start of a three-game road trip.